the page and move onto a sense of normalcy, but as the investigation continues into dzhokhar tsarnaev who remains injured and innovative. -- intubated. guest: the their travel is likely going to be key to understand whether or not this event was for an inspired, or perhaps even concocted in consultation with individuals abroad. key questions will likely revolve around the older brother, and secondary questions, how it did this individual seem to lead such a double life? all the family and friends that have come forward have been shocked. that happens quite frequently in this type of case, but in this case he really does seem to have been quite well liked and well integrated and kept this other part of his life entirely separate. host: and again, this is based on what we know so far. it seems like a lot of the questions into the older brother, the 26-europe, who spent six months in russia. there was a conversation over the weekend between the president and russian president vladimir putin. right now there is no strong reason to think that this is directly tied to a foreign terrorist group.